backport #13424 on 22?

> > this as #13424 is merged on main?
>
> Yes @DaanHoogland , the unmount_operation timing out and causing backup to fail is fixed by that PR. The backup will succeed in those cases after throwing a warning.

So we want that one backported to 22 and this one closed, clear.

_Originally posted by @DaanHoogland in https://github.com/apache/cloudstack/issues/12133#issuecomment-5020363567_

先閱讀已合併的 PR #13424 和連結的討論，以了解對 unmount_operation 逾時的修正。檢查 CloudStack 22 的 backport 流程，將變更套用至該版本，並驗證在受影響的情況下 backup 是否會帶有警告成功完成，然後再關閉此 issue。

由索引模型根據 Issue 內容生成。